Roller blind arrangement for shading a window of a motor vehicle

Abstract

The invention relates to a roller blind arrangement (5) for shading a window of a motor vehicle (1), comprising - a roller blind track (7) to which a roller blind shaft and an extension profile (6) are attached, - two guide devices (12a, 12b) and a motor drive device (13) for transferring the pull-out profile (6) from a retracted position to an extended position and vice versa, - a closing part (9) which can be pivoted by means of a control mechanism, with a closed position for covering the roller blind shaft and an open position into which it is pretensioned, is characterized in that that on the lateral sides of the roller blind arrangement (5) are provided - a catch hook (20) which is rotatably mounted on an underside (35) of the locking part (9), with a catch position into which the catch hook is preloaded and in which a hook opening (36) faces the pull-out profile (6) in the extended position, and with a closed position, and - an actuating element (21) movable with the extension profile, wherein, with the actuating element (21) retracted into the hook opening (36), the catch hook (20) can be pivoted into the closed position by moving the extension profile (6) into the retracted position, and the locking part (9) can be pulled into the closed position by means of the catch hook (20). The roller blind arrangement requires little installation space and enables smooth actuation of the locking part.

Description

[0001] The invention relates to a roller blind arrangement for shading a window of a motor vehicle, comprehensive - a roller blind shaft for winding and unwinding a roller blind, - a roller blind which is attached at its rear end to the roller blind shaft, - an extension profile attached to a front end of the roller blind, - two guide devices for guiding the extension profile on both sides along an extension path between a retracted position and an extended position, - a motor drive device with which the pull-out profile can be moved from the retracted position to the extended position and vice versa, - a locking part, wherein the locking part is pivotally mounted about a pivot axis between a closed position and an open position, wherein the locking part covers the roller blind shaft with wound-up roller blind web and the extension profile in the closed position, and the locking part releases a passage area for the extension profile and the roller blind web in the open position, - a spring device for the locking part, which pre-tensions the locking part into the open position, - a control mechanism with which the locking part can be moved from the closed position to the open position and vice versa.

[0002] Such a roller blind arrangement is known from EP 1 609 647 B1.

[0003] Motor vehicles often carry passengers who wish to observe their surroundings through the windows or to have ambient light in the interior of the vehicle. However, it can be uncomfortable for passengers to sit behind a window if the sunlight through the window is very intense, causing significant heat to build up on parts of the passenger's body. To reduce the sunlight, a roller blind can be used, which covers or shades a window with a roller blind panel. The roller blind panel is unrolled from a roller blind shaft.

[0004] Especially in sedans, rear passengers are often exposed to strong sunlight through the rear window. Various roller blind arrangements have been developed to shade the rear window of motor vehicles, some of which also allow automatic operation.

[0005] A roller blind assembly in a motor vehicle is only required temporarily during strong sunlight. When the blind is not needed, it is generally desirable to roll it up and store it discreetly together with the roller blind shaft. Typically, a pivoting closing part (also called a flap, cover or panel) is provided for this purpose. This creates a passageway when the blind is in use (open position) and, conversely, closes the passageway when the blind is not needed (closed position). When the closing part is closed, the closing part covers the roller blind shaft and the (at least largely) wound-up blind assembly. In a roller blind assembly for the rear window of a sedan, for example, the closing part is connected to or integrated into a parcel shelf and, when closed, sits flush with the parcel shelf.

[0006] EP 1 609 647 B1 discloses a window blind in which a cover (blind panel) is attached at its front end to a tension rod arrangement (extension profile) and at its rear end to a winding shaft (blind shaft). The tension rod arrangement is guided laterally in guide rails (guide devices) and can be actuated by a gear motor via actuating elements with helical ribs. A cover is rotatably mounted on hinge pins by means of hinge brackets. The cover is pre-tensioned into an open position by compression springs via first arms of the hinge brackets. A cap with a driving pin can be moved together with the tension rod arrangement. Further arms are formed on the hinge brackets, whereby the driving pins abut against the further arms when the cover is retracted and close the cover.

[0007] This window blind requires a comparatively large amount of space below the parcel shelf for the hinge brackets and their other arms. Furthermore, the initial contact between the drive pins and the other arms of the hinge brackets when retracting the window blind is quite abrupt, which can cause noticeable noise and also places mechanical stress on the material of the drive pins and hinge brackets.

[0008] DE 10 2018 008 376 A1 discloses a shading device for a window of a motor vehicle, in which a pivotable flap is pre-tensioned into a closed position. A control link is formed on the underside of each side of the flap, which interacts with an actuating element provided on an extension profile of the roller blind, and which further interacts with a locking element. The locking element is pivotable about an axis fixed to the vehicle and is pre-tensioned to a stop by a tension spring. Furthermore, the locking element also interacts with the actuating element. With this arrangement, the flap can, in addition to the closed position, assume a fully open position for the passage of the extension profile and, in addition, a lowered locking position for the passage of the roller blind.This design also requires a comparatively large amount of installation space under the parcel shelf, and here too there is abrupt contact between the actuating element and the control gate when retracting.

[0009] EP 3 310 598 B1 describes another shading device for a motor vehicle window. A locking part is pre-tensioned into the closed position and is actuated by a control mechanism that is separate from an extension profile of the roller blind.

[0010] WO 2021 / 105126 A1 discloses a shading device for a motor vehicle window, wherein a flexible shading structure including an extension profile can be moved from a rest position lowered into a receiving shaft to an extended position. A pivotable locking cover is biased into a closed position by spring force. A locking element pivotable on the vehicle secures the locking cover in an open position in a locked position and releases the locking cover for a closing movement in a released position. The locking element is biased toward the locked position by spring force. In the rest position, a driver of the locking element rests against the extension profile and thus holds the locking element in the released position.By means of a mechanical positive control device, the pull-out profile causes the locking element to move into its locked position during an extension movement and the locking element to move into the release position during a lowering movement.

[0011] DE 10 2009 047 939 A1 describes a sun visor arrangement for a vehicle, comprising a base unit in which a spool is arranged, onto which a movable visor body is wound. A drive unit drivable by a mechanism is provided at the free end of the visor body. The movable visor body is guided through an opening in the base unit. A pivotable cover unit is pretensioned into an open position in which the opening is exposed. When the drive unit is retracted, the drive unit is arranged within the cover unit and holds the cover unit in a closed position in which the opening is covered. When the drive unit is extended, the drive unit allows the cover unit to pivot into the open position, and when the drive unit is retracted, the drive unit drives a rotation of the cover unit from the open position to the closed position. Object of the invention

[0012] The object of the invention is to present a roller blind arrangement which requires little installation space and enables smooth operation of the closing part. Description of the invention

[0013] This object is achieved according to the invention by a roller blind arrangement of the type mentioned at the outset, which is characterized in that that the control mechanism on the lateral sides of the roller blind assembly includes - a catch hook which is mounted on an underside of the locking part so as to be rotatable about a rotation axis and which can be pivoted at least between a catch position and a closed position, wherein the catch hook is preloaded into the catch position in which a hook opening faces the extension profile in the extended position, - an actuating element for moving into the hook opening, wherein the actuating element is movable together with the pull-out profile, wherein with the actuating element retracted into the hook opening, by moving the pull-out profile into the retracted position, the catch hook can be pivoted into the closed position and the locking part can be pulled into the closed position against the force of the spring device by means of the catch hook.

[0014] According to the invention, the locking part is actuated on a respective lateral side of the roller blind assembly by means of the actuating element, which moves with the extension profile (and is typically rigidly connected to it). However, the actuation does not occur through direct contact between the actuating element and the locking part, but rather mediated by the catch hook, which is rotatably mounted in the underside of the locking part.

[0015] The catch hook is preloaded into a catch position; for example, a spring can press the catch hook against a stop, which is typically formed on the locking part. In this catch position, a hook opening faces the (extended) extension profile.

[0016] If the pull-out profile is now retracted (i.e. the roller blind is wound up), the actuating element moves into the hook opening and takes the catch hook with it as the pull-out profile continues to retract.

[0017] The catch hook rotates around its axis of rotation on the underside of the locking part. The movement of the extension profile is thus partially converted into a rotational movement of the catch hook, which makes the initial coupling between the actuating element and the catch hook, and thus also with the hinged locking part, less abrupt.

[0018] In addition, during the movement of the actuating element, the entrained catch hook can pull over its pivot bearing on the underside of the locking part, thereby moving the locking part into the closed position. This movement can be carried out relatively smoothly, in particular by allowing the catch hook to continue rotating around its axis of rotation, or by allowing the actuating element to roll and / or slide in the hook opening for at least part of the remaining movement.

[0019] As the extension element is retracted, the catch hook is pivoted towards the underside of the locking part. Typically, when the locking part is in its closed position, the catch hook is positioned as close as possible to the locking part, whereby the catch hook can rest against the underside of the locking part if desired. Accordingly, in the closed position, very little installation space is required below the locking part or below a parcel shelf. Conversely, when the locking part is in its open position, for example when the locking part is pivoted upwards relative to a parcel shelf, there is plenty of space available on the underside of the locking part, particularly in the passage area. There, the catch hook can be arranged in the catch position, particularly in a downward-hanging orientation, without any noticeable additional installation space being required for the catch hook.In particular, the catch hook can be arranged at least partially above the top of a parcel shelf in the catch position when the locking part is open.

[0020] When the roller blind is extended, the described movements take place in reverse order, with the closing part being guided towards the open position by the pre-tension of the spring device.

[0021] The pivot axis of the locking part typically runs at least approximately parallel to the roller blind shaft or its rotation axis. The rotation axis of each catch hook typically runs at least approximately parallel to the roller blind shaft or its rotation axis. Preferred embodiments of the invention

[0022] Particularly preferred is an embodiment of a roller blind arrangement according to the invention in which the control mechanism is designed such that with the actuating element retracted into the hook opening by moving the pull-out profile into the retracted position - initially, in a first movement section, only the catch hook is pivoted from the catch position to the closed position, - and then, in a second movement section, the catch hook is simultaneously pivoted further towards the closed position and the locking part is pulled towards the closed position by means of the catch hook. This design ensures that both the initial coupling of the actuating element and locking part and the further movement sequence are particularly smooth. In the first movement section, the hooking in and the first part of the movement of the actuating element can take place with or without any significant transfer of force to the locking part. In the second movement section, part of the movement of the actuating element is converted into a further pivoting of the catch hook. The first and / or the second movement section can each be accompanied temporarily or entirely by a rolling movement or sliding movement of the actuating element in the hook opening on the catch hook.

[0023] A preferred embodiment further includes a hook spring device that preloads the catch hook into the catch position. This makes hooking with the actuating element particularly reliable. Typically, a stop is formed on the locking part, against which the catch hook is pressed in the catch position. The preload of the catch hook is typically achieved by a spring, for example, a torsion spring. The torsion spring can be subjected to compression.

[0024] In an alternative embodiment, the catch hook is preloaded into the catch position solely by gravity. This allows for a particularly simple design. The catch hook can be equipped with a rotary damper on its rotational axis to keep the catch hook approximately in the catch position during minor vibrations of the vehicle. The rotary damper is typically filled with a highly viscous fluid.

[0025] A preferred embodiment is one in which the catch hook is designed to be telescopic and is preloaded into a compressed telescopic position by a telescopic spring device. This allows for a particularly smooth coupling of the actuating element and a particularly smooth transfer of the locking part into the closed position.

[0026] In an advantageous embodiment, in the closed position of the catch hook, a rear section of the catch hook is pivoted into a recess on the underside of the locking part. In the closed position, the catch hook is pivoted toward the underside of the locking part and can be accommodated in a particularly space-saving manner by pivoting the rear section into the recess. If desired, the catch hook can also rest against the underside of the locking part in the closed position.

[0027] A preferred embodiment provides that the catch hook forms a leading edge for the actuating element, that the leading edge in the catch position runs at an angle α to a local travel direction of the actuating element, in particular wherein the local travel direction of the actuating element runs parallel to a local section of the extension path, and that 30°≤α≤60°. This allows the actuator to contact the catch hook particularly gently.

[0028] An embodiment is preferred in which the catch hook forms a main section, wherein in the closed position of the catch hook the main section runs parallel or approximately parallel to an opposite side section of the actuating element, In particular, the main section and the side section are essentially flat. This allows the catch hook to be accommodated in a particularly space-saving manner in the closed position.

[0029] In an advantageous embodiment, the catch hook and the operating section are arranged to the side of the blind. This ensures that the catch hook and the operating section do not obstruct the blind. The catch hook can be pivoted (to the side of the blind) into an area below the blind. Likewise, the operating section (to the side of the blind) can be moved at the same height as the blind or, if desired, into the area below the blind.

[0030] Another advantageous embodiment is one in which the extension profile is formed with a rod that is telescopically designed to extend at least approximately parallel to the extension of the roller blind shaft. This allows the rod to compensate for a variable distance between the guide devices (in the transverse direction, i.e., along the direction of the roller blind shaft) over the extension path, as is often the case in sedans in the area of the rear window.

[0031] A preferred embodiment is one in which a sliding element is guided by a respective guide device, which is connected to the extension profile via a respective pivot joint. This makes it possible to tilt the sliding element in the guide devices differently relative to the direction of the roller blind shaft over the travel path of the roller blind, which significantly simplifies the design of the guide devices, especially if the distance between the guide devices is variable over the extension path.

[0032] Furthermore, an embodiment is preferred which provides that the motor drive device comprises a motor which drives a cross shaft, wherein the cross shaft runs at least approximately parallel to the roller blind shaft and has a cable pulley at both ends, and that on both lateral sides of the blind arrangement is provided - a sliding element which is guided by the guide device of the respective side and is connected to the pull-out profile, - a first rope that runs from the pulley of the respective side directly to the sliding element, - a second cable, which runs from the cable pulley on the respective side via a deflection pulley at the far end of the guide mechanism to the sliding element. This allows the extension profile to be moved easily and reliably within the guide mechanism. The first cable retracts the extension element, and the second cable extends the extension element.

[0033] Another advantageous embodiment is an elastically deformable contact element against which the locking part rests in the closed position. Typically, the contact element is slightly under elastic tension (compressive stress) in the closed position. The elastically deformable contact element can compensate for play in the control mechanism. Rattling of the locking part in the closed position can be prevented. Uses according to the invention

[0034] The present invention also encompasses the use of a roller blind assembly according to the invention, as described above, for shading a window of a motor vehicle. The roller blind assembly according to the invention requires very little installation space in the motor vehicle. Smooth opening and closing of the locking part is enabled, so that noise pollution for passengers is minimized when the roller blind assembly is operated, as well as mechanical stress and wear. The shaded window can, in particular, be a rear window of the motor vehicle.

[0035] A variant of this use is also advantageous, which provides that the window is a rear window of the motor vehicle, that the roller blind arrangement is installed behind a parcel shelf or integrated into a parcel shelf of the motor vehicle, and that the locking part is aligned with the parcel shelf in the closed position, and in the open position, the area between the locking part and an edge of the parcel shelf forms the passage area for the extension profile and the roller blind. The area of the parcel shelf can thus be used to store the roller blind assembly in a simple and space-saving manner. Furthermore, an aesthetically pleasing impression for the observer can be achieved when the locking part is in the closed position.

[0036] Further advantages of the invention will become apparent from the description and the drawings. Likewise, the above-mentioned and further-described features can be used individually or in combination in any desired manner. The embodiments shown and described are not intended to be exhaustive, but rather are exemplary in nature for describing the invention. Detailed description of the invention and drawing Fig. 1 shows a schematic side view of a motor vehicle, wherein a roller blind arrangement according to the invention is used to shade the rear window; Fig. 2 shows a schematic, perspective overview of an exemplary embodiment of a roller blind arrangement according to the invention, with a closing part in the closed position; Fig. 3 shows the blind arrangement of Fig. 2, with the locking part in the open position and the pull-out profile extended; Fig. 4 shows a schematic perspective view from the rear of the lateral left part of the roller blind arrangement of Fig. 2 in the area of the locking part, with the locking part in the closed position; Fig. 5 shows a schematic plan view of the roller blind arrangement of Fig. 4, marking section planes A1 and A2 for the Fig. 6 and 7a-7g; Fig. 6 shows in a schematic cross-section the roller blind arrangement of Fig. 4 along the section plane A1 marked there; Fig. 7a shows a schematic cross-section through the roller blind arrangement of Fig. 5 along the offset cutting planes A1 and A2 marked there, with the locking part in the open position and with an actuating element which, coming from an extended position of an extension profile, has not yet contacted a catch hook; Fig. 7b shows the blind arrangement of Fig. 7a, with the actuating element retracted into a hook opening of the catch hook, at the first contact of the actuating element with the catch hook; Fig. 7c shows the blind arrangement of Fig. 7a, after the catch hook has been pivoted slightly towards the underside of the locking part by the actuating element, but the locking part has not yet been moved; Fig. 7d shows the blind arrangement of Fig. 7a, after the catch hook has been pivoted slightly further towards the underside of the locking part, and the locking part is just beginning to be pulled downwards from the open position; Fig. 7e shows the blind arrangement of Fig. 7a, after the catch hook has been pivoted a little further towards the underside of the locking part and the locking part has been pulled down a little; Fig. 7f shows the blind arrangement of Fig. 7a, after the locking part has been pulled a little further down; Fig. 7g shows the blind arrangement of Fig. 7a, after the locking part has reached the closed position; Fig. 8a shows a further embodiment of a roller blind arrangement according to the invention, similar to that in Fig. 7f, but with a telescopic catch hook, in a compressed (non-telescopic) telescoping position of the catch hook; Fig. 8b shows a roller blind arrangement of Fig. 8a, with the telescopic catch hook in an extended (telescopic) telescopic position of the catch hook; Fig. 9 shows in a schematic side view parts of a motor drive device for the pull-out element in the region of a lateral guide device, for the invention.

[0037] The Fig. Figure 1 shows an example of the use of the invention in a schematic, partially transparent side view of a motor vehicle 1, here designed as a sedan. A roller blind arrangement 5 according to the invention is arranged near the rear window 2 of the motor vehicle 1 in the area of the so-called parcel shelf 3 behind the rear passenger seats 4.

[0038] In the example shown, an extension profile 6, to which a roller blind 7 is attached at its front end, is arranged in an extended position near the headliner 8 of the passenger compartment of the motor vehicle 1. A pivotable closing part 9 (also called a flap) is in an open position and exposes a passage area 10 between the closing part 9 and an edge 3c of the parcel shelf 3, through which the roller blind 7 is guided. The roller blind 7 can protect the rear passengers from strong sunlight entering the passenger compartment through the rear window 2.

[0039] When the roller blind assembly 5 is not required, the roller blind web 7 can be wound up onto a roller blind shaft 11. The roller blind web 7 is attached to the roller blind shaft 11 at its rear end. Typically, the roller blind shaft 11 is pre-tensioned into a wound-up state of the roller blind web 7, for example, with a torsion spring (not shown in detail). The roller blind web 7 and the roller blind shaft 11 can be covered by the closing part 9 in a closed position, wherein the closing part 9 is aligned with the parcel shelf 3 (closed position not shown, but see, for example, Fig. 7g on this point).

[0040] The Fig. 2 and Fig. 3 show, in schematic perspective views, an exemplary embodiment of a roller blind arrangement 5 according to the invention. For better orientation, a parcel shelf 3, into which the roller blind arrangement 5 is integrated with a lower part, and parts of a C-pillar of an associated motor vehicle are also shown.

[0041] In a closed position, which is Fig. 2, a closing part 9 covers the lower part of the roller blind arrangement 5, in particular a roller blind shaft and a roller blind web wound thereon including the extension profile (lower part of the roller blind arrangement not shown in Fig. 2). The locking part 9 in the horizontal, closed position is aligned with the parcel shelf 3, in the example shown both with a front part 3a of the parcel shelf 3 and with a rear part 3b of the parcel shelf 3.

[0042] In an open position of the locking part 9, which is in Fig. 3, the locking part 9 is pivoted upwards with its front part. This opens up a passage area 10 (also called passage gap) between the locking part 9 and the front part 3a of the parcel shelf 3. The pull-out profile 6 and the roller blind (roller blind not shown in Fig. 3). The pull-out profile 6 is in Fig. 3 in its fully extended position.

[0043] Guide devices 12a, 12b for the extension profile 6 are arranged on the lateral sides of the roller blind assembly 5. The guide devices 12a, 12b run essentially parallel to the lateral sides of the rear window of the motor vehicle (rear window not shown in detail). In the illustrated embodiment, the guide devices 12a, 12b form an angle of approximately 30° relative to the horizontal and also converge slightly upwards.

[0044] Largely hidden by the rear part 3b of the parcel shelf 3 (see dashed structures in Fig. 3) are parts of a motorized drive device 13, with which the extension profile 6 can be motorized. The drive device 13 comprises a motor 14, with which a cross shaft 15 can be driven. At the lateral ends of the cross shaft 15, cable pulleys 16 are located, by means of which a sliding element can be driven via a first cable and a second cable (largely concealed in Fig. 2 and Fig. 3, see also Fig. 9).

[0045] The Fig. 4, Fig. 5 and Fig. 6 further explain the roller blind arrangement 5 using a section on the lateral left side (note that the right side of the roller blind arrangement 5 is constructed accordingly). Fig. 4 shows a schematic perspective view from the rear. Fig. 5 shows a top view with marking of offset cutting planes A1 and A2. Fig. 6 shows a cross-section at section plane A1 through the roller blind arrangement 5.

[0046] As in Fig. 4, the locking part 9 is pivotable about a pivot axis SA by means of a hinge 17. This pivot axis SA runs parallel to the direction of extension of the roller blind shaft (the roller blind shaft is in Fig. 4 obscured, cf. but Fig. 6 and the associated roller blind rotation axis RDA). By means of a spring device 18 in the hinge 17, here formed by a torsion spring, the locking part 9 is pre-tensioned into the open (folded up) position. Fig. 4, the locking part 9 is in the closed (folded down) position. Accordingly, a control mechanism 19 momentarily holds the locking part 9 in the closed position.

[0047] The control mechanism 19 comprises a catch hook 20 which is rotatably mounted on the underside of the locking part 9 and into which an actuating element 21 is currently pivoted (more on the control mechanism 19 in Fig. 7a-7g). The actuating element 21 is connected to the extension profile 6; accordingly, the actuating element 21 and the extension profile 6 move together in the guide device 12a.

[0048] The guide device 12a here forms a rail 22 in which a sliding element 23 (also called a sliding block) can be moved. The sliding element 23 is connected to the actuating element 21, and thus also to the extension profile 6, via a pivot joint 24. A rod 25 is also formed on the extension profile 6, by means of which the length of the extension profile 6, including the actuating element 21, can be telescopically adjusted in the direction parallel to the roller blind rotation axis RDA. In the present case, the rod 25 is designed such that the actuating element 21 can be extended and retracted into the extension profile 6 parallel to the roller blind rotation axis RDA.

[0049] Please note that the roller blind (in Fig. 4 and Fig. 5 not shown) in the direction of extension of the roller blind shaft 11 only extends approximately to the hinge 17; accordingly, the control mechanism 19 (particularly in the area of the catch hook 20) is not affected by the roller blind web 7.

[0050] In the Fig. 6, the roller blind shaft 11, onto which the roller blind web 7 is wound, is clearly visible in schematic cross-section. A front end 26a of the roller blind web 7 is attached to the extension profile 6. The extension profile 6 is equipped with a clamping aid 27, which forms a recess 28. A rear grip rod 29 is inserted into this recess, which is firmly connected to the end of the roller blind web 7, for example, by gluing. A rear end 26b of the roller blind web 7 is attached to the outside of the roller blind shaft 11 in a manner not shown in detail, for example, by stapling. Fig. 6 also clearly shows that the locking part 9 rests on a stop 30 in the closed position, which here is formed with an elastically deformable stop element 31. The approximately C-shaped stop element 31 is made of hard rubber, for example.

[0051] The Fig. 7a to 7g explain in more detail the operation of the control mechanism 19 of the roller blind arrangement 5, with which the adjusting element 9 can be moved from the open position (see Fig. 7a) into the closed position (see Fig. 7g) when the extension profile 6 is retracted (i.e. when the roller blinds are retracted). When the extension profile 6 is extended, this process takes place in reverse. Fig. 7a-7g are schematic sectional views with offset section lines A1, A2 as in Fig. 5 shown.

[0052] The Fig. Figure 7a shows the roller blind assembly 5 in an initial position, in which the spring device in the hinge 17 pushes the locking part 9 into the open position around the pivot axis SA. The open position of the locking part is defined by a stop (not shown in detail) in the area of the hinge 17.

[0053] The catch hook 20 is attached to the underside 35 of the locking part 9 with a pivot bearing and can pivot about a rotation axis DA (also called the hook rotation axis). The catch hook 20 is pressed into the illustrated catch position by a hook spring device 32 (here a torsion spring, shown in dashed lines because it is concealed behind the catch hook). The catch position is defined by a stop 33 formed on the locking part 9 and interacting with a projection 34 on the catch hook 20. The hook spring device 32 does not need to be particularly strong, as it only works against the dead weight of the catch hook 20.

[0054] It should be noted that, alternatively, the catch hook 20 can also be pre-tensioned into the catch position by gravity; in this case, the catch hook 20 is preferably mounted on the underside 35 of the locking part 20 via a rotation damper (not shown in detail).

[0055] The actuating element 21, which moves together with the extension profile (not shown) in the guide device 12a along the rail 22, comes from the extended position at the top right and is moved towards the retracted position, i.e., to the bottom left. The actuating element 21 is in Fig. 7a still far from hook 20.

[0056] The actuating element 21 then moves into a hook opening 36 of the catch hook 20. The hook opening 36 is therefore facing the actuating element 21 coming from the extended position, and thus also the extension profile coming from the extended position. In the Fig. In the situation shown in Figure 7b, the actuating element 21 is just touching the catch hook 20 for the first time. This first contact occurs at a leading edge 37 of the catch hook 20. The leading edge 37 and a local travel direction 38 of the actuating element 21 (corresponding to a local section of the extension path of the extension profile) enclose an angle α, which here is approximately 45° (in projection onto the plane perpendicular to the rotation axis DA of the catch hook).

[0057] The further movement of the actuating element 21 to the bottom left initially causes only a pivoting of the catch hook 20 about its axis of rotation DA on the underside 35 of the locking part 9, as in Fig. 7c, toward the underside 35 of the locking part 9 ("first movement phase"). The pivoting of the catch hook 20 occurs counter to the (slight) force of the hook spring device 32. The actuating element 21 slides into the hook opening 36 on the catch hook 20. The locking part 9 does not yet move.

[0058] The further movement of the actuating element 21 downwards to the left pivots the catch hook 20 further, up to the Fig. 7d. The actuating element 21 is now hooked onto the catch hook 20, so that from now on, a further movement of the actuating element 21 to the bottom left causes the catch hook 20 to pull on the pivot bearing on the underside of the locking part 9. Accordingly, the locking part 9 now begins to be pulled downward around the pivot axis SA against the force of the spring device in the hinge 17 ("second movement phase").

[0059] The Fig. Figure 7e shows the roller blind assembly 5 in a subsequent situation, in which the closing part 9 has been pulled slightly downward from the open position by the further moving actuating element 21 by means of the catch hook 20. The actuating element 21 slides further along the catch hook 20 in the hook opening 36, and the catch hook 20 is pivoted further toward the underside 35 of the closing part 9.

[0060] In the Fig. 7f, the actuating element 21 has been moved even further to the lower left. Accordingly, the locking part 9 has been pulled even further downward with the catch hook 20, toward the closed position of the locking part 20. The catch hook 20 is approaching its closed position.

[0061] In the situation of Fig. 7g, the actuating element 21 has reached its intended end position to the bottom left when retracting the roller blind; this corresponds to the fully retracted position of the extension profile. In this situation, the locking part 20 has now reached the closed position and rests with its underside 35 on the elastic stop element 31. Likewise, the catch hook 20 has reached its maximum pivoting toward the underside 35 of the locking part 9, and thus its closed position. In this closed position, the catch hook 20 protrudes with a rear section 39 into a recess 40 on the underside 35 of the locking part 9. In addition, a flat main section 41 of the catch hook 20 lies parallel to and at a minimal distance from an opposite, flat side section 42 of the actuating element 20.

[0062] The closing of the locking part 9 in the described process is particularly smooth, quiet, and minimizes mechanical stress, especially during the first contact between the actuating element 21 and the remaining control mechanism 19, here between the actuating element 21 and the catch hook 20, and also at the beginning of the closing movement of the locking part 9. Furthermore, very little space is required below the locking part 9 for the control mechanism 19. The control mechanism 19 is overall very compact and has a low degree of closure.

[0063] When the roller blind is extended, the situations shown are reversed, i.e. from Fig. 7g after Fig. 7a. The above statements then apply accordingly.

[0064] In the Fig. 8a and Fig. 8b, a further embodiment of a rolling arrangement 5 according to the invention is described, which largely corresponds to the embodiment of Fig. 2-7g. Therefore, only the essential differences are explained. The two Fig. 8a, Fig. 8b show cross sections corresponding to the Fig. 7g (especially with offset cutting planes A1 and A2, cf. Fig. 5 on this).

[0065] In the embodiment shown, the catch hook 20 is designed to be telescopic. A lower part 20a of the catch hook 20 is extendable relative to an upper part 20b of the catch hook 20 in a telescoping direction 43. In the design shown, a guide channel 50 (shown in dotted lines) is formed in the lower part 20a for this purpose, in which a pin 51 attached to the upper part 20b can slide; the (current) alignment of the guide channel 50 and the pin 51 corresponds to the (current) telescoping direction 43. The upper part 20b is mounted on the underside 35 of the locking part 9 for rotation about the rotation axis DA.

[0066] In Fig. 8a shows a compressed telescopic position of the catch hook 20, in which the catch hook 20 is pre-tensioned by a telescopic spring device 44, here a tension spring. Fig. 8b shows an extended telescopic position of the catch hook 20, which is achieved by means of the actuating element 21 against the force of the telescopic spring device 44; the situation of Fig. 8b corresponds to the end position of the actuating element 21 reached in practice, and thus to the retracted position of the extension profile.

[0067] When the roller blind is retracted, the movement sequence essentially begins at the same time as the closing movement of the closing part 9 (i.e. at the beginning of the second movement section, cf. Fig. 7d above) with the telescoping of the catch hook 20 from the compressed telescoping position. The further movement of the actuating element 21 to the bottom left then simultaneously causes a movement of the locking part 9 towards the closed position, as well as a telescoping (expanding) of the catch hook 20, and also a further pivoting of the catch hook 20 towards the underside of the locking part 9. This allows the start and further course of the closing movement of the locking part 9 to be made even smoother. Likewise, reaching the end position, i.e. the closed position of the locking part 9 and the locking position of the catch hook, is particularly smooth, since with the locking part 9 closed, any remaining further movement of the actuating element 21 can, if necessary, be compensated for by further telescoping (expanding) of the catch hook 20.

[0068] The Fig. Figure 9 illustrates, in a schematic side view, parts of a preferred motor drive device 13 for the extension profile for the invention. This motor drive device 13 can be used in particular in the embodiment of the roller blind arrangement of Fig. 2-7g can be used.

[0069] At each end of the motor-driven cross shaft 15 (see Fig. 3 for this purpose), a cable pulley 16 is fastened in a rotationally fixed manner. A first cable 46 and a second cable 47 are wound on the cable pulley 16 in opposite winding directions (note that the wound parts of the cables 46, 47 shown are not drawn to scale with regard to their length). The first cable 46 runs directly (i.e. without reversing the direction) from the cable pulley 16 to a sliding element 23, wherein it is aligned parallel to the rail 22 by a guide pulley 45. The second cable 47 runs from the cable pulley 16 via a deflection pulley 48 (i.e. with reversal of the direction) to the sliding element 23, wherein this deflection pulley 48 is arranged at an end 49 of the guide device 12a which is remote from the cable pulley 16 (facing away).

[0070] The sliding element 23 is movable in a rail 22 in the guide device 12a. The actuating element and the extension profile (not shown in detail, but see e.g. Fig. 4 on this).

[0071] If the cable pulley 16 is now moved into Fig. 9 is rotated clockwise, the first rope 46 is wound onto the rope pulley 16, and the sliding element 23 is pulled downwards to the left toward the rope pulley 16. At the same time, the second rope 47 is unwound from the rope pulley 16.

[0072] If the pulley 16 is in Fig. 9 is rotated counterclockwise, the second rope 47 is wound onto the rope pulley 16, and the sliding element 23 is pulled upwards to the right toward the deflection pulley 48. At the same time, the first rope 46 is unwound from the rope pulley 16.

[0073] This allows the sliding element 23, and thus the extension profile, to be moved along the extension path AW in the guide device 12a in a simple and reliable manner. The retracted position of the extension profile is reached at the lower left end of the extension path AW, and the extended position of the extension profile is reached at the upper right end of the extension path AW.

[0074] In summary, the invention relates to a roller blind arrangement (5) for shading a window of a motor vehicle (1), comprising - a roller blind track (7) to which a roller blind shaft and an extension profile (6) are attached, - two guide devices (12a, 12b) and a motor drive device (13) for transferring the pull-out profile (6) from a retracted position to an extended position and vice versa, - a locking part (9) which can be pivoted by means of a control mechanism, with a closed position for covering the roller blind shaft and an open position into which it is pre-tensioned, which is characterized in that on the lateral sides of the roller blind arrangement (5) are provided - a catch hook (20) which is rotatably mounted on an underside (35) of the locking part (9), with a catch position into which the catch hook is preloaded and in which a hook opening (36) faces the pull-out profile (6) in the extended position, and with a closed position, and - an actuating element (21) movable with the pull-out profile, With the actuating element (21) retracted into the hook opening (36), the catch hook (20) can be pivoted into the closed position by moving the extension profile (6) into the retracted position, and the locking part (9) can be pulled into the closed position by means of the catch hook (20). The roller blind arrangement requires little installation space and enables smooth actuation of the locking part. List of reference symbols 1 motor vehicle 2 rear window 3 parcel shelf 3a front part of the parcel shelf 3b rear part of the parcel shelf 3c Edge of the parcel shelf 4 rear passenger seats 5 Roller blind arrangement 6 pull-out profile 7 roller blind 8 Heavens 9 Locking part (flap) 10 Passage area 11 Roller blind shaft 12a, 12b Guide systems 13 motor drive device 14 Engine 15 Cross shaft 16 pulley 17 Hinge 18 Spring device of the locking part 19 Control mechanism 20 fishing hooks 20a lower part of the catch hook 20b upper part of the catch hook 21 Actuating element 22 rail 23 Sliding element 24 Swivel joint 25 telescopic rods 26a front end of the roller blind 26b rear end of the roller blind 27 Clamping aid on the pull-out profile 28 Withdrawal on the clamping aid 29 Rear grip bar 30 Stop for locking part 31 elastic stop element 32 Hook spring device 33 Stop for catch hook 34 projection on the catch hook 35 Underside of the locking part 36 hook opening 37 Leading edge 38 local travel direction of the actuating element 39 rear section on the catch hook 40 return 41 Main section on the catch hook 42 Side section on the actuating element 43 Telecopy direction 44 Telescopic spring device 45 Leadership role 46 first rope 47 second rope 48 pulley 49 end of the guide device remote from the pulley 50 guide channel 51 pen A1, A2 cutting planes AW Exit route DA rotation axis of the catch hook RDA roller blind rotation axis (of the roller blind shaft) SA Swivel axis of the locking part

Claims

[1] Roller blind arrangement (5) for shading a window of a motor vehicle (1), comprising - a roller blind shaft (11) for winding and unwinding a roller blind web (7), - a roller blind (7) which is attached at its rear end (26b) to the roller blind shaft (11), - an extension profile (6) which is attached to a front end (26a) of the roller blind (7), - two guide devices (12a, 12b) for guiding the pull-out profile (6) on both sides along a pull-out path (AW) between a retracted position and an extended position, - a motor drive device (13) with which the pull-out profile (6) can be moved from the retracted position to the extended position and vice versa, - a locking part (9), wherein the locking part (9) is pivotally mounted about a pivot axis (SA) between a closed position and an open position, wherein the locking part (9) in the closed position covers the roller blind shaft (11) with wound-up roller blind web (7) and the extension profile (6), and the locking part (9) in the open position releases a passage area (10) for the extension profile (6) and the roller blind web (7), - a spring device (18) for the locking part (9), which pre-tensions the locking part (9) into the open position, - a control mechanism (19) with which the locking part (9) can be moved from the closed position to the open position and vice versa, characterized by that the control mechanism (19) on the lateral sides of the roller blind arrangement (5) each comprises - a catch hook (20) which is mounted on an underside (35) of the locking part (9) so as to be rotatable about a rotation axis (DA) and is pivotable at least between a catch position and a closed position, wherein the catch hook (20) is preloaded into the catch position in which a hook opening (36) faces the pull-out profile (6) in the extended position, - an actuating element (21) for moving into the hook opening (36), wherein the actuating element (21) is movable together with the pull-out profile (6), wherein with the actuating element (21) moved into the hook opening (36) by moving the pull-out profile (6) into the retracted position, the catch hook (20) can be pivoted into the closed position and the locking part (9) can be pulled into the closed position against the force of the spring device by means of the catch hook (20). [2] Roller blind arrangement (5) according to claim 1, characterized bythat the control mechanism (19) is designed so that with the actuating element (21) retracted into the hook opening (36) by moving the pull-out profile (6) into the retracted position - initially, in a first movement section, only the catch hook (20) is pivoted from the catch position to the closed position, - and then, in a second movement section, the catch hook (20) is simultaneously pivoted further towards the closed position and the locking part (9) is pulled towards the closed position by means of the catch hook (20). [3] Roller blind arrangement (5) according to one of claims 1 or 2, characterized by that a hook spring device (32) is provided with which the catch hook (20) is pre-tensioned into the catch position. [4] Roller blind arrangement (5) according to one of claims 1 or 2, characterized by that the catch hook (20) is only preloaded into the catch position by gravity. [5] Roller blind arrangement (5) according to one of the preceding claims, characterized by that the catch hook (20) is designed to be telescopic and is pre-tensioned into a compressed telescopic position by a telescopic spring device (44). [6] Roller blind arrangement (5) according to one of the preceding claims, characterized by that in the closed position of the catch hook (20) a rear section (39) of the catch hook (20) is pivoted into a recess on the underside (35) of the locking part (9). [7] Roller blind arrangement (5) according to one of the preceding claims, characterized by , that the catch hook (20) forms a starting edge (37) for the actuating element (21), that the leading edge (37) in the catch position runs at an angle α to a local travel direction (38) of the actuating element (21), in particular wherein the local travel direction (38) of the actuating element (21) runs parallel to a local section of the extension path (AW), and that 30°≤α≤60°. [8] Roller blind arrangement (5) according to one of the preceding claims, characterized by in that the catch hook (20) forms a main section (41), wherein in the closed position of the catch hook (20) the main section (41) runs parallel or approximately parallel to an opposite side section (42) of the actuating element (21), in particular wherein the main section (41) and the side section (42) run essentially flat. [9] Roller blind arrangement (5) according to one of the preceding claims, characterized by that the catch hook (20) and the actuating section are arranged to the side of the roller blind (7). [10] Roller blind arrangement (5) according to one of the preceding claims, characterized by that the pull-out profile (6) is formed with a rod (25) which is designed to be telescopic at least approximately parallel to the extension of the roller blind shaft (11). [11] Roller blind arrangement (5) according to one of the preceding claims, characterized by that a sliding element (23) is guided by a respective guide device (12a, 12b) and is connected to the pull-out profile (6) via a respective rotary joint (24). [12] Roller blind arrangement (5) according to one of the preceding claims, characterized by , that the motor drive device (13) comprises a motor (14) which drives a transverse shaft (15), wherein the transverse shaft (15) runs at least approximately parallel to the roller blind shaft (11) and has a cable pulley (16) at both ends, and that on the two lateral sides of the roller blind arrangement (5) is provided - a sliding element (23) which is guided by the guide device (12a, 12b) of the respective side and is connected to the pull-out profile (6), - a first cable (46) which runs from the cable pulley (16) of the respective side directly to the sliding element (23), - a second cable (47) which runs from the cable pulley (16) of the respective side via a deflection pulley (48) at the remote end (49) of the guide device (12a, 12b) to the sliding element (23). [13] Roller blind arrangement (5) according to one of the preceding claims, characterized by that an elastically deformable contact element (31) is present, against which the closing part (9) rests in the closed position. [14] Use of a roller blind arrangement (5) according to one of the preceding claims for shading a window of a motor vehicle (1). [15] Use according to claim 14, characterized by , that the window is a rear window (2) of the motor vehicle (1), that the roller blind arrangement (5) is installed behind a parcel shelf (3) or integrated into a parcel shelf (3) of the motor vehicle (1), and that the locking part (9) is aligned with the parcel shelf (3) in the closed position, and in the open position forms the passage area (10) for the pull-out profile (6) and the roller blind (7) between the locking part (9) and an edge (3c) of the parcel shelf (3).

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